18QHTF21-70.200-PD

Overview

The 18QHTF21-70.200-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co., Ltd. It operates at a fixed frequency of 70.2 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features a standby or power-down function to manage energy consumption. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6 mm. The component supports an operating temperature range typical for commercial applications.

Feature Summary

• Supports low-voltage operation at 1.8V
• Includes standby and power-down functionality
• Utilizes LVCMOS output logic for digital interfacing

Applications

• General-purpose clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Ensure the 1.8V supply voltage aligns with your system's power rails. Confirm that the 4-SMD no-lead package footprint matches your PCB layout constraints. Check for any specific handling instructions related to the surface-mount technology used in this component.

Selection Notes

Select this component when a precise 70.2 MHz clock source is required for LVCMOS-compatible circuits. Consider the 1.8V supply requirement and the availability of a standby mode for power-sensitive designs. Evaluate the small 2.0x1.6 mm package size against available board space. Compare performance metrics such as phase noise and stability if high-precision timing is critical for the application.

Part Context

This part belongs to the 18QHTF21 series of crystal oscillators from Mercury Electronics. The series offers various frequencies within the same compact form factor. The 'PD' suffix indicates the inclusion of power-down capabilities. This family targets applications requiring reliable clock signals in space-constrained environments.

Replacement Considerations

Direct replacements must match the 70.2 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pin compatibility and electrical characteristics. Consult manufacturer cross-reference lists for verified substitutes.